GitLab

This CL hooks up use-fake-device-for-media-stream and
use-fake-ui-for-media-stream flags for getdisplayMedia() calls for enabling
testing in the future.
- Use fake-ui chooses a default device. If fake-device is specified, that takes
priority.
- Fake-device type can be modified by flag args.

Bug: 326740
Change-Id: I4e97941743fa2149f88bc3714beb4d833da42e48
Reviewed-on: https://chromium-review.googlesource.com/1177448Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Christian Fremerey <chfremer@chromium.org>
Commit-Queue: Emircan Uysaler <emircan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584121}